The difference between abstract classes and interfaces has long vexed Java developers. Find out how Java 8's default methods introduce both new complexity and new options to that familiar ...

I'm trying to model some data in code and i'm a bit confused on what should be an abstract class vs an interface, and why i can't override an abstract property with a property of an inherited type ...

Readers have returned quite a bit of feedback concerning, “Abstract Classes Vs. Interfaces” from April 2001. A recurring request asks to see a complete example of using interfaces and abstract ...